Has she been spotted at her brother’s fights?

Erin attends most of her brothers fights, and when she isn't there in the flesh she sends on supportive messages like this tweet to Conor after he defeated Chad Mendes at UFC 189 she took to Twitter to pay tribute to her younger brother.

She posted on Twitter: “We did it,” with a picture of her hugging ‘The Notorious’ after his big win.

The whole McGregor clan rushed into the octagon after Conor Knocked out Jose Aldo in just 13 seconds at UFC 194, Erin was of course there are she congratulated her brother on becoming featherweight champion.

What else has she shared on Instagram:

While we get to see plenty of the finer things in Erin's life on her Instagram, it is clear that family is deeply important to her. Many of her snaps show off her boyfriend Terry Kavanagh and of course, her brother Conor.